Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. Information necessary to service the system safely is included in the SRS AIRBAG and SEAT BELTS article of this Service Information.
| WARNING | To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SRS AIRBAG . Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Information. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. |
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
| WARNING | When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery and wait at least three minutes before performing any service. |
Special Service Tools
Tool number (Kent-Moore No.) Tool name Description - (-) Model GR8-1200 NI Multitasking battery and electrical diagnostic station Tests batteries, starting and charging systems and charges batteries. For operating instructions, refer to diagnostic station instruction manual. - (-) Model EXP-800 NI Battery and electrical diagnostic analyzer Tests batteries and charging systems. For operating instructions, refer to diagnostic analyzer instruction manual
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Commercial Service Tool
Tool name Description Power tool Loosening nuts, screws and bolts
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- If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
- Use fuse of specified rating. Never use fuse of more than specified rating.
- Do not partially install fuse; always insert it into fuse holder properly.
- Remove fuse for "ELECTRICAL PARTS (BAT)" if vehicle is not used for a long period of time.
Fusible Link
A melted fusible link can be detected either by visual inspection or by feeling with finger tip. If its condition is questionable, use circuit tester or test lamp.
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| CAUTION | If fusible link should melt, it is possible that critical circuit (power supply or large current carrying circuit) is shorted. In such a case, carefully check and eliminate cause of malfunction. Never wrap outside of fusible link with vinyl tape. Important: Never let fusible link touch any other wiring harness, vinyl or rubber parts. |
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NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYS
Relays can mainly be divided into three types: normal open, normal closed and mixed type relays.
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How to Handle Battery
| CAUTION | If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt booster battery. After connecting battery cables, ensure that they are tightly clamped to battery terminals for good contact. Never add distilled water through the hole used to check specific gravity. |
METHODS OF PREVENTING OVER-DISCHARGE
The following precautions must be taken to prevent over-discharging a battery.
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- The battery surface (particularly its top) should always be kept clean and dry.
- The terminal connections should be clean and tight.
- At every routine maintenance, check the electrolyte level. This also applies to batteries designated as "low maintenance" and "maintenance-free".
- When the vehicle is not going to be used over a long period of time, disconnect the battery cable from the negative terminal. (If the vehicle has an extended storage switch, turn it off.)
Checking Electrolyte Level
| WARNING | Never allow battery fluid to come in contact with skin, eyes, fabrics, or painted surfaces. After touching a battery, never touch or rub your eyes until you have thoroughly washed your hands. If acid contacts eyes, skin or clothing, immediately flush with water for 15 minutes and seek medical attention. Failure to do this may cause personal injury or damage to clothing or the painted surfaces. |
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- Remove the cell plug using a suitable tool.
- Add distilled water up to the MAX level.
SULFATION
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- A battery will be completely discharged if it is left unattended for a long time and the specific gravity will become less than 1.100. This may result in sulfation on the cell plates.
- To determine if a battery has been "sulfated", note its voltage and current when charging it. As shown in the figure below, less current and higher voltage are observed in the initial stage of charging sulfated batteries.
- A sulfated battery may sometimes be brought back into service by means of a long, slow charge, 12 hours or more, followed by a battery capacity test.
Specific Gravity Check
Note. Check the charge condition of the battery.
Periodically check the specific gravity of the electrolyte. Keep a close check on charge condition to prevent over-discharge.
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- Read hydrometer and thermometer indications at eye level.
- Use the chart below to correct your hydrometer reading according to electrolyte temperature.
| Battery electrolyte temperature [°C (°F)] | Add to specific gravity reading |
|---|---|
| 71 (160) | 0.032 |
| 66 (150) | 0.028 |
| 60 (140) | 0.024 |
| 54 (130) | 0.020 |
| 49 (120) | 0.016 |
| 43 (110) | 0.012 |
| 38 (100) | 0.008 |
| 32 (90) | 0.004 |
| 27 (80) | 0 |
| 21 (70) | 0.004 |
| 16 (60) | 0.008 |
| 10 (50) | 0.012 |
| 4 (40) | 0.016 |
| 1 (30) | 0.020 |
| 7 (20) | 0.024 |
| 12 (10) | 0.028 |
| 18 (0) | 0.032 |
HYDROMETER TEMPERATURE CORRECTION SPECIFICATION
| Corrected specific gravity | Approximate charge condition |
|---|---|
| 1.260 - 1.280 | Fully charged |
| 1.230 - 1.250 | 3/4 charged |
| 1.200 - 1.220 | 1/2 charged |
| 1.170 - 1.190 | 1/4 charged |
| 1.140 - 1.160 | Almost discharged |
| 1.110 - 1.130 | Completely discharged |
Charging The Battery
| CAUTION | Never "quick charge" a fully discharged battery. Keep the battery away from open flame while it is being charged. When connecting the charger, connect the leads first, then turn on the charger. Never turn on the charger first, as this may cause a spark. If battery electrolyte temperature rises above 55 °C (131 °F), stop charging. Always charge battery at a temperature below 55 °C (131 °F). |
| Approximate charge condition | Charge current (A) | Charge time (h) |
|---|---|---|
| Fully charged | 7 | 2 |
| 3/4 charged | 2.5 | |
| 1/2 charged | 5 | |
| 1/4 charged | 7.5 | |
| Almost discharged | 9 | |
| Completely discharged | 10 |
CHARGING RATES (STANDARD CHARGE)
| Approximate charge condition | Charge current (A) | Charge time (h) |
|---|---|---|
| Fully charged | ||
| 3/4 charged | 16 | 0.5 |
| 1/2 charged | 33 | |
| 1/4 charged | ||
| Almost discharged | ||
| Completely discharged |
CHARGING RATES (QUICK CHARGE)
Note. The ammeter reading on your battery charger will automatically decrease as the battery charges. This indicates that the voltage of the battery is increasing normally as the state of charge improves. The charging amps indicated above refer to initial charge rate. If, after charging, the specific gravity of any two cells varies more than 0.050, the battery should be replaced.
ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL: Special Repair Requirement
| System | Item | Reference |
|---|---|---|
| Engine Control System | Idle Air Volume Learning | IDLE AIR VOLUME LEARNING |
| Audio, Visual and Navigation System | Audio (Radio Preset) | Refer to Owner's Manual. |
| Navigation System | Refer to Owner's Manual. |
REQUIRED PROCEDURE AFTER BATTERY DISCONNECTION
How To Check
- If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.
- Use fuse of specified rating. Never use fuse of more than specified rating.
- Do not partially install fuse; always insert it into fuse holder properly.
- Remove fuse for "ELECTRICAL PARTS (BAT)" if vehicle is not used for a long period of time.
A melted fusible link can be detected either by visual inspection or by feeling with finger tip. If its condition is questionable, use circuit tester or test lamp.
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| CAUTION | If fusible link should melt, it is possible that critical circuit (power supply or large current carrying circuit) is shorted. In such a case, carefully check and eliminate cause of malfunction. Never wrap outside of fusible link with vinyl tape. Important: Never let fusible link touch any other wiring harness, vinyl or rubber parts. |
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Battery
| Type | Q-85 | |
|---|---|---|
| 5 hour rate minimum | [V - Ah] | 12 - 36 |
| Cold cranking current A (For reference value) | A | 470 |
| *: Always check with the Parts Department for the latest parts information. | ||